When PATH variable gets overloaded with too many values it reaches a point where you cannot add values anymore. Trying the following should solve your problem.

Solution 1:

1. Create a new system variable say ‘NEWPATH‘
2. Assign the bin directory location to ‘NEWPATH‘
3. Now append ‘; %NEWPATH%‘ to the PATH variable

If this still doesn‘t work then try to copy some part of PATH variable already existing values to the ‘NEWPATH‘ and then append the ‘NEWPATH‘

Solution 2:

Check the value of PATH variable if you can group and shorten the paths. For example,

C:Program FilesMicrosoft SQL Server102ToolsBinn;C:Program FilesMicrosoft SQL Server102DTSBin;

can be combined to

C:Program FilesMicrosoft SQL Server;

In this way you can build more space into your fixed length PATH variable and finally adjust your bin directory location into PATH.

Hope this helps you!

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方案2

There are few ways to clean up your path variable. The easiest is to use Rapid Environment Editor. This free utility will,

1. Remove the duplicate paths (right click > Cleanup Paths)
2. Remove non-existent folders (shown in red which you need to manually delete)
3. Replace long paths with short paths (right click > long to short path).

I do above steps in order and use 3rd step only for longest paths until Path variable size is in control again.

If you want to go more advanced,here‘s little C# tool that you can modify to whatever other logic you want to implement